
44
MOVIDRIVE
®
PROFIBUS DFP11A
4
The PROFIBUS-FMS
Interface
2) Parameter channel executes a Read service
If a Read service is executed via the acyclic parameter channel (e.g. Read Parameter, Read Default,
etc.), the inverter will enter the read data in the parameter channel together with the service
acknowledgement when the service has been executed. For the master to receive these data an
FMS-READ access to the acyclic parameter channel must be executed. Therefore, to carry out Read
services via the parameter channel, an FMS-WRITE service followed by an FMS-READ service are
required. Fig. 45 shows this sequence.
01239AEN
Fig. 45: Execution of the Read services via the acyclic MOVILINK
®
parameter channel
The “MOVILINK
®
Acyclic Parameter Channel” object is only handled locally on the fieldbus option
pcb and is defined as shown in Table 16.
Table 16: Definition of the “MOVILINK Acyclic Parameter Channel” object
4.3
Communications Relationship List (CRL)
The communications relationships between the MOVIDRIVE
®
drive inverter and the FMS master
are stored in the Communications Relationship List (CRL). You will need these CRL data to
configure an FMS master that is to communicate with the MOVIDRIVE
®
drive inverter via
PROFIBUS-FMS.
Index:
8299
Object code:
7 (Simple variable)
Data type index:
10 (Octet string)
Length:
8
Local address:
-
Password:
-
Access groups:
-
Access rights:
Read all / Write all
Name[16]:
-
Extension length:
-
WRITE 8299 (parameter channel)
READ 8299 (parameter channel)
OK
Service = Parameter channel with result
1. Initiate the execution of the service coded in the parameter
channel with WRITE to the "MOVILINK Acyclic Parameter
Channel Object"
2. READ "MOVILINK Acyclic Parameter Channel" and evaluate
the service acknowledgement in the parameter channel
Receipt is confirmed immediately,
parameter channel is evaluated and
the requested service executed.
Service acknowledgement is entered
in the parameter channel and can be
evaluated in the Master with a READ
access.
(Master)
MOVIDRIVE
®
(Slave)
Higher Level Control System